If distance between two curreni-carrying wires is doubled, then force between them is
The force between two current-carrying wires is inversely proportional to the distance between them (F ∝ 1/d). If the distance is doubled, the force is halved. Hence, the correct answer is (A) Halved.
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(A) is correct. The force per unit length between two parallel current-carrying wires is given by
F ∝ I₁ I₂/d, where d is the distance between them. If the distance is doubled, the force becomes
1/2 of the original value. Thus, the force between the wires is halved.
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